1. Opal flashed glass - this is a glass surface, not sprayed, so will be very shiny.

2. Enamel sprayed - this will appear duller than a opal glass finish.

However, looking at the photos, I would say it was spayed enamel and then silk-screen printed with the Cordon pattern. If it were opal-flashed the colour would be a lighter-grey and not the brighter finish exhibited on yours.

But for all that, it's still quite uncommon and probably an earlier model.

It's very exciting cos I've got this HUGE Chance handkerchief vase sitting on the top of the cupboard, and I have just got to check the pattern and I hope it is worth A FORTUNE .... cos it was worth tuppence when I got it!